Here is a nice technical write-up of the OV7670 camera module that can be purchased on eBay for under $10. We have a Wing that lets you easily connect this camera to the Papilio. There are also VHDL code examples out there on Hamster’s Wiki page. All we need now is to make a DesignLab library for these puppies!
The OV7670 is a low cost image sensor + DSP that can operate at a maximum of 30 fps and 640 x 480 (“VGA”) resolutions, equivalent to 0.3 Megapixels. The captured image can be pre-processed by the DSP before sending it out. This preprocessing can be configured via the Serial Camera Control Bus (SCCB). You can see the full datasheet here.